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Plagiarism Checker
Compare two texts and detect similarity, matching sentences, and shared content percentage instantly.
Paste an original text and a text to check. This tool computes word-level and sentence-level similarity between the two — useful for teachers checking student submissions, or checking paraphrasing.
How it works
Paste an original reference text and the text you want to check into the two panels, then click Check Similarity. The tool computes word-level Jaccard similarity, identifies matching sentence pairs, and shows an overall similarity percentage with highlighted matches.
Why use this tool?
Teachers use it to compare student submissions against source material. Writers use it to ensure paraphrased content is sufficiently original. It's a fast, private, client-side plagiarism similarity tool with no uploads to third-party servers.